diff --git a/README.md b/README.md
index 9a90f7d..fb51a10 100644
--- a/README.md
+++ b/README.md
@@ -119,9 +119,13 @@ The following example Active Record Migration will work for the default setup of
 ```ruby
 # db/migrate/20210310083511_cve201925025_mitigation.rb
 class Cve201925025Mitigation < ActiveRecord::Migration[5.2]
-  def change
+  def up
     ActionDispatch::Session::ActiveRecordStore.session_class.find_each(&:secure!)
   end
+
+  def down
+    # no-op
+  end
 end
 ```